The dtctr is a pocket device for use for testing if a monitor is 15KHz capable, a must if to be used with Atari ST and Amiga amongst other computers. It's powered by a 3V CR2032 battery and by the press of the power button it generates a test image within 6 seconds as of now since the firmware is really slow.
The firmware is based (slightly tweaked) on Nick Gammons work.
The hardware is basically an Arduino pro mini running at 16MHz, and can be programmed using the ISP header on the board.
Design files and source code.
dtctr - Pocket sized 15Khz hsync generator.
dtctr - Pocket sized 15Khz hsync generator.
master of the bare pcb
Re: dtctr - Pocket sized 15Khz hsync generator.
What a clever and time saving device
The amount of times i've read a spec sheet for something and its not had that feature or been completely wrong
The amount of times i've read a spec sheet for something and its not had that feature or been completely wrong
Re: dtctr - Pocket sized 15Khz hsync generator.
Very interesting. Does it just sync the screen or display anything?
Thanks for sharing the code etc.
Thanks for sharing the code etc.
If it ain't broke, test it to Destruction.
Re: dtctr - Pocket sized 15Khz hsync generator.
Here's an image of my 1990FXp with it's info screen active while generating a signal. It's an earlier design, but everything is the same.
- Attachments
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- sample-nec1990fxp.jpg (253.94 KiB) Viewed 4331 times
master of the bare pcb